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ATTORNEY ented Ju1y31. 1883.

N. PETERS mammhn hmwnmn m. 04 c H. E. PAR SON.

ORE PULVERIZING MACHINE.

(No Model.)

v VI YTNE SSES: a. 0%? m UNITED STATES PATENT Orricn.

HENRY PARSON, or NEW YORK, t. Y.

ORE-PULVERlZlNG MACHINE.

SPECIFICATION formingpart of Letters Patent No. 282,218, dated July 31, 1883. I Application filed March 2, 1883. (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY E. PARSON, of the city, county, and Stateof New York, have invented certain new and useful Improve ments in Ore-lulverizing Machines, of which gold ores in a wet state; and it consists of a fixedannular casing provided with fixed circumferential grinding-rings, and of an interior revolving driving-frame having a central supply-hopper and horizontal partitionshelves, with pockets for the grinding-disks, which latter bear against removable checks of wood in the straight side walls of the peck ets 'of the driving-frame The ground ore passes from the hopper along the bottom shelf to the outer grinding-ring, then between the grinding-surfaces in an upward direction, then inwardly .over and between mercury-coated copper plates-one at the top of the drivingframe, the other above the same in the top of the inclosing-casingand then through discharge-spouts to the annular gutter, to be con ducted off by suitable pipes.

In, the accompanying drawings, Figure 1 represents a side elevation of my improved ore-pulverizin g machine, one-half being sh own in section. Fig. 2 is a plan of the same,.one half being shown with the top or cap of the casing removedand one of the pockets of the grinding-disk in section.

Similar letters of reference indicate corresponding parts. Referring to the drawings, A represents an annular casing, which is supported on stand ards of a bed-frame, A, and provided at the center with a vertical bearing, a, for the shaft 12 of the driving-frame B. The step bearing a of the drivingframe B is supported on the bed-frame A below the fixed casing A, the vertical shaft 1) receiving by a bevel-gear, rotary motion from a horizontal driving-shaft provided with pulleys and flywheel. The

driving-frame B is hungby itscylindrical center portion, d, to the upper. threaded end of the driving-shaft b, and adjusted higher or lower thereon by means of a screw-nut and hand-wheel, d, or other suitable mechanism.

In the bottom of the casing A is arranged a radial supply-channel, e, that leads from the circumference inwardly, then upwardly for conducting the water used in grinding the ore to the space between the bottom of the driving-frame and the bottom of the outer casing, A. The casing A is provided with fixed. circumferential grinding-rings O O, and with a conically-shaped top part or cap, A having discharge-spouts A, the latter terminating above an annular gutter, A that extends around the casing A, and is provided with pipes f f, for conducting off the water and finely-pulverized ore.

The driving-frame B is provided with a central supply-hopper, E, concentric to the cylindrical center portion, (Z, of the frame B,and with horizontal shelves 9 9, extending, respectively, from the lower edge of the supply-hopper E and the cylindrical center. portion, 61, toward the grinding-disks D D, saidshelves being provided with pockets D .for the grindingdisks D. Each pocket is open toward the grinding-rings 0, its side wall, D, being made of arc shape-at the rear part and straight at the front part, the straight part of the side wall being provided with dovetailed removable plates or cheeks D of wood, as shown in Fig. 2, against which the grinding-disks D D bear during the revolutions of the drivingframe. The grinding-disks D receive, by the drivingframe B, motion around their own axes, and simultaneously a centrifugal mo tion, so as to bear with considerable force against the grinding-rings O O. The ore that passes up with the water between the grinding-rings C C and grinding-disks D D is re duced to a considerable degree of fineness, and then passed inwardly between a mercuryplated copper plate, 71 secured to the top .shelf of the driving-frame B and a secondmercury-coated copper plate, h, above the same, the latter being secured to the top part or cap, A, of the casing A, below the level of the opening of the dischargespouts, as shown clearly in Fig.1. The ore passes from the inner end of the copper plate It to the upper plate, h, and then, in outward direction, over the same and through the dischargespouts A into the gutter A. The mercury-coated upper plat-es, h h, serve to retain the finer particles of gold-dust during the passage of the ore over the same, so that they are amalgamated directly with the mercury coating of the plates,while the rest is passed off through an amalgamator for further treatment.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with an annular inc1osin g-casing, A, provided with fixed interior circumferential grinding-rings C O, of a revolving driving-frame, B, provided with a'central supply-hopper, E, horizontal shelves gg, pockets D, and grinding-disks D D, substantially as and for the purpose set forth.

2. The combination of the casing A, grinding-rings O O, and grinding-disks D D, with revolving driving-frame B, provided with horizontal shelves 9 g, and pockets D for the grinding-disks, said pockets being formed of arc shaped walls at one side and straight walls at the other side, the latter being provided with exchangeable wooden blocks or plates, substantially as specified.

or cap of the casing A, substantially as speci- I11 testimony that I claim the foregoing as my invention I have'signed my name in presence of two subscribing witnesses.

H. E. PARSON.

\Vitnesses:

CARL KARI), SIDNEY MANN. 

